Revert 270894 "Use real PlatformSupport in content unit tests"

> Use real PlatformSupport in content unit tests
> 
> Once all pages are force composited by default, this allows these tests
> to not explode when trying to create GraphicsLayers because of a lack of
> Platform::compositorSupport.
> 
> BUG=none
> 
> Review URL: https://codereview.chromium.org/287043002

This test has caused leak errors on the mac valgrind bot:
http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20Mac%20%28valgrind%29%282%29/builds/27964

TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/284193006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@270950 0039d316-1c4b-4281-b951-d872f2087c98

content/content_tests.gypi

@@ -30,6 +30,8 @@
             'public/test/nested_message_pump_android.cc',
             'public/test/nested_message_pump_android.h',
             'test/layouttest_support.cc',
+            'test/mock_webclipboard_impl.cc',
+            'test/mock_webclipboard_impl.h',
             'test/test_media_stream_client.cc',
             'test/test_media_stream_client.h',
             'test/test_video_frame_provider.cc',
@@ -171,8 +173,6 @@
         'test/mock_keyboard_driver_win.h',
         'test/mock_render_process.cc',
         'test/mock_render_process.h',
-        'test/mock_webclipboard_impl.cc',
-        'test/mock_webclipboard_impl.h',
         'test/mock_webframeclient.h',
         'test/mock_weburlloader.cc',
         'test/mock_weburlloader.h',
@@ -204,16 +204,8 @@
         'test/test_render_view_host_factory.h',
         'test/test_web_contents.cc',
         'test/test_web_contents.h',
-        'test/test_webkit_platform_support.cc',
-        'test/test_webkit_platform_support.h',
         'test/web_gesture_curve_mock.cc',
         'test/web_gesture_curve_mock.h',
-        'test/webkit_support.cc',
-        'test/webkit_support.h',
-        'test/webkit_unit_test_support.cc',
-        'test/webkit_unit_test_support.h',
-        'test/web_layer_tree_view_impl_for_testing.cc',
-        'test/web_layer_tree_view_impl_for_testing.h',
         'test/weburl_loader_mock.cc',
         'test/weburl_loader_mock.h',
         'test/weburl_loader_mock_factory.cc',
@@ -1356,8 +1348,6 @@
           ],
         },
         {
-          # TODO(enne): Remove this once dependencies in Blink
-          # point to test_support_content instead.
           'target_name': 'content_webkit_unit_test_support',
           'type': 'static_library',
           'dependencies': [
@@ -1367,6 +1357,16 @@
             '..',
           ],
           'sources': [
+            'test/mock_webclipboard_impl.cc',
+            'test/mock_webclipboard_impl.h',
+            'test/test_webkit_platform_support.cc',
+            'test/test_webkit_platform_support.h',
+            'test/web_layer_tree_view_impl_for_testing.cc',
+            'test/web_layer_tree_view_impl_for_testing.h',
+            'test/webkit_support.cc',
+            'test/webkit_support.h',
+            'test/webkit_unit_test_support.cc',
+            'test/webkit_unit_test_support.h',
           ],
         },
       ],

content/public/test/unittest_test_suite.cc

@@ -7,22 +7,44 @@
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "base/test/test_suite.h"
-#if !defined(OS_IOS)
-#include "content/test/test_webkit_platform_support.h"
-#endif
+#include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 
 namespace content {
 
+#if !defined(OS_IOS)
+// A stubbed out WebKit platform support impl.
+class UnitTestTestSuite::UnitTestWebKitPlatformSupport
+    : public blink::Platform {
+ public:
+  UnitTestWebKitPlatformSupport() {}
+  virtual ~UnitTestWebKitPlatformSupport() {}
+  virtual void cryptographicallyRandomValues(unsigned char* buffer,
+                                             size_t length) OVERRIDE {
+    base::RandBytes(buffer, length);
+  }
+  virtual const unsigned char* getTraceCategoryEnabledFlag(
+      const char* categoryName) {
+    // Causes tracing macros to be disabled.
+    static const unsigned char kEnabled = 0;
+    return &kEnabled;
+  }
+};
+#endif  // !OS_IOS
+
 UnitTestTestSuite::UnitTestTestSuite(base::TestSuite* test_suite)
     : test_suite_(test_suite) {
   DCHECK(test_suite);
 #if !defined(OS_IOS)
-  platform_support_.reset(new TestWebKitPlatformSupport);
+  webkit_platform_support_.reset(new UnitTestWebKitPlatformSupport);
+  blink::initialize(webkit_platform_support_.get());
 #endif
 }
 
 UnitTestTestSuite::~UnitTestTestSuite() {
+#if !defined(OS_IOS)
+  blink::shutdown();
+#endif
 }
 
 int UnitTestTestSuite::Run() {

content/public/test/unittest_test_suite.h

@@ -13,7 +13,6 @@ class TestSuite;
 }
 
 namespace content {
-class TestWebKitPlatformSupport;
 
 // A special test suite that also initializes WebKit once for all unittests.
 // This is useful for two reasons:
@@ -32,7 +31,8 @@ class UnitTestTestSuite {
   scoped_ptr<base::TestSuite> test_suite_;
 
 #if !defined(OS_IOS)
-  scoped_ptr<TestWebKitPlatformSupport> platform_support_;
+  class UnitTestWebKitPlatformSupport;
+  scoped_ptr<UnitTestWebKitPlatformSupport> webkit_platform_support_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(UnitTestTestSuite);