Re-arrange the implementation of the devtools launcher so that google3 is not required to depend on any devtools packages. Also renames the build_runner folders to isolated to better clarify their intention.

[flutter_tools] use flutter tool handler for dwds resources and precache tool pub dependencies (#65814)

If the tool is downloaded from a precompiled snapshot, or if the backing source files in the pub cache are deleted, the dwds debugging functionality will break as the client.js file cannot be located. Instead use the PackageConfig to verify that package location, downloading if it is missing.

Override the dwds middleware to avoid Isolate.resolvePackageUri

Fixes #53644
Fixes #65475

Integration tests must only go through the real file system/process manager/platform. The global indirection makes this code harder to understand than if it directly referred to the concrete instances that are being used.

Update the integration shard to use a const instance of a LocalFIleSystem, LocalProcessManager, and LocalPlatform. Remove global usage and apply testWithoutContext.

This is no longer used, in favor of just attempting to unzip and handling the exception.

This reverts commit b1c17313.

Remove globals and testbed to simplify test cases, using the existing environment configuration. This is some pre-factoring work to make landing #63610 easier

* Add punctuation for unterminated sentences in doc comments

* Addressing review nit

Add feature flags for android, ios, and fuchsia (on by default). After updating the g3 rollers, the fuchsia feature will be turned off by default. Creates a simpler base type of feature flags for g3 to extend.

Updates android, ios, fuchsia workflows to use feature flags check.
Removes concept of stable artifacts and checks on flutter version.

Fixes #58999
#52859
#12768

Allow configuring the flutter_manifest to support a synthetic package, this is done through flutter: generate: true.

When running pub get, insert a flutter_gen entry into the packages if it does not already exist. This points to .dart_tool/flutter_gen, which can be updated to contain the generated intl sources (But doesn't currently)

Adds an integration test that verifies this code can be run and imported when enabled.

Part of #60914

* Fixing patch for coming breaking change in HttpClientRequest

* Add noSuchMethod() and comment out abort()

* Add ignore: override_on_non_overriding_member

Implements the flutter config feature for #61407 , but does not implement any of the functionality.

update flutter precache --force to delete all stamp files. In the event that a user is hitting a cache issue, this should be easier than re-downloading all artifacts or manually blowing away the cache.

This is probably how it should have worked in the first place

Last batch of test fixes for general shard.

On Windows, Process.run assumes the output uses the system codepage by default. This allows specifying it in our wrapper, and sets the encoding for vswhere to UTF-8 since we're passing a flag that forces it to use UTF-8 output.

Fixes #53515

Refactors KernelCompiler and ResidentCompiler to no longer use globals (except as a fallback for g3 migration). Improves the compilation error when running flutter test on a package without a flutter_test dependency.

Updates machine mode to output trace text to stderr

instead of restricting profile/release mode based on whether the tool thinks the device is an emulator, restrict based on the device target architecture and the requested build mode. Notably, this enables release mode on x86_64 Android emulators, but not x86 emulators since we do not support that as an AOT target.

This does not add release mode support for simulators, since this requires us to build and upload artifacts for simulator/x86_64

Make it possible for all FlutterCommands to be global free, by moving instantiation to inside the Zone context. Additionally, provide VerboseLogger and NotifyLogger (daemon) at the top level and remove from command-specific overrides.

This allows removing a work around where web devices needed to look up directly from the context in non-test code.

Technically the output preferences are still zone injected, but these will be moved soon as they were not being used correctly by the top level command (the injection comes after ArgParser reads the overflow values, causing numerous wrap issues)

Suppress compilation errors on startup so they are not duplicated from the native build step.

removes globals from devFS operations and cleans up testing to be context free. Removes unused and unnecessarily temp directory in testing.