blimp: Set up the CompositorDependencies for blimp in Chrome.

content/public/test/test_renderer_host.cc

Index: content/public/test/test_renderer_host.cc
diff --git a/content/public/test/test_renderer_host.cc b/content/public/test/test_renderer_host.cc
index 388a9d9b45a43e6f4fd4cbe4408a7fa22ab07843..a53eee5d742b7e2c28aa93fd22241e7b51571415 100644
--- a/content/public/test/test_renderer_host.cc
+++ b/content/public/test/test_renderer_host.cc
@@ -30,6 +30,7 @@
 
 #if defined(OS_ANDROID)
 #include "content/browser/renderer_host/context_provider_factory_impl_android.h"
+#include "content/test/mock_gpu_channel_establish_factory.h"
 #endif
 
 #if defined(OS_WIN)
@@ -245,6 +246,8 @@ void RenderViewHostTestHarness::SetUp() {
   ImageTransportFactory::InitializeForUnitTests(
       base::WrapUnique(new NoTransportImageTransportFactory));
 #else
+  gpu_channel_factory_ = base::MakeUnique<MockGpuChannelEstablishFactory>();
+  ContextProviderFactoryImpl::Initialize(gpu_channel_factory_.get());
   ui::ContextProviderFactory::SetInstance(
       ContextProviderFactoryImpl::GetInstance());
 #endif
@@ -314,6 +317,8 @@ void RenderViewHostTestHarness::TearDown() {
     ImageTransportFactory::Terminate();
 #else
   ui::ContextProviderFactory::SetInstance(nullptr);
+  ContextProviderFactoryImpl::Terminate();
+  gpu_channel_factory_.reset();
 #endif
 }