test_runner: Move more Mock* files into content namespace.

content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp

Index: content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp
diff --git a/content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp b/content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp
index 383f6a424356da3f0a6a133e08db69ef39a0cc1f..0256283c3d3591b4064fa3d39615971b91785e4f 100644
--- a/content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp
+++ b/content/shell/renderer/test_runner/MockWebMIDIAccessor.cpp
@@ -11,13 +11,16 @@
 #include "third_party/WebKit/public/platform/WebMIDIAccessorClient.h"
 
 using namespace blink;
+using WebTestRunner::TestInterfaces;
+
+namespace content {
 
 namespace {
 
-class DidStartSessionTask : public WebTestRunner::WebMethodTask<WebTestRunner::MockWebMIDIAccessor> {
+class DidStartSessionTask : public WebTestRunner::WebMethodTask<MockWebMIDIAccessor> {
 public:
-    DidStartSessionTask(WebTestRunner::MockWebMIDIAccessor* object, blink::WebMIDIAccessorClient* client, bool result)
-        : WebMethodTask<WebTestRunner::MockWebMIDIAccessor>(object)
+    DidStartSessionTask(MockWebMIDIAccessor* object, blink::WebMIDIAccessorClient* client, bool result)
+        : WebMethodTask<MockWebMIDIAccessor>(object)
         , m_client(client)
         , m_result(result)
     {
@@ -33,9 +36,7 @@ private:
     bool m_result;
 };
 
-} // namespace
-
-namespace WebTestRunner {
+}  // namespace
 
 MockWebMIDIAccessor::MockWebMIDIAccessor(blink::WebMIDIAccessorClient* client, TestInterfaces* interfaces)
     : m_client(client)
@@ -55,4 +56,4 @@ void MockWebMIDIAccessor::startSession()
     m_interfaces->delegate()->postTask(new DidStartSessionTask(this, m_client, m_interfaces->testRunner()->midiAccessorResult()));
 }
 
-} // namespace WebTestRunner
+}  // namespace content