Remove all uses of "using namespace std"

content/shell/renderer/test_runner/TestPlugin.cpp

Index: content/shell/renderer/test_runner/TestPlugin.cpp
diff --git a/content/shell/renderer/test_runner/TestPlugin.cpp b/content/shell/renderer/test_runner/TestPlugin.cpp
index 22f56f5ad3d5035833e6e524b9f5acfd01ebb792..6edf08f50af860ab97705f9da014d0f3c0184a04 100644
--- a/content/shell/renderer/test_runner/TestPlugin.cpp
+++ b/content/shell/renderer/test_runner/TestPlugin.cpp
@@ -25,7 +25,6 @@
 #include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
 
 using namespace blink;
-using namespace std;
 
 namespace content {
 
@@ -477,14 +476,14 @@ void TestPlugin::destroyScene()
 
 bool TestPlugin::initProgram()
 {
-    const string vertexSource(
+    const std::string vertexSource(
         "attribute vec4 position;  \n"
         "void main() {             \n"
         "  gl_Position = position; \n"
         "}                         \n"
     );
 
-    const string fragmentSource(
+    const std::string fragmentSource(
         "precision mediump float; \n"
         "uniform vec4 color;      \n"
         "void main() {            \n"
@@ -539,7 +538,7 @@ void TestPlugin::drawPrimitive()
     m_context->drawArrays(GL_TRIANGLES, 0, 3);
 }
 
-unsigned TestPlugin::loadShader(unsigned type, const string& source)
+unsigned TestPlugin::loadShader(unsigned type, const std::string& source)
 {
     unsigned shader = m_context->createShader(type);
     if (shader) {
@@ -556,7 +555,7 @@ unsigned TestPlugin::loadShader(unsigned type, const string& source)
     return shader;
 }
 
-unsigned TestPlugin::loadProgram(const string& vertexSource, const string& fragmentSource)
+unsigned TestPlugin::loadProgram(const std::string& vertexSource, const std::string& fragmentSource)
 {
     unsigned vertexShader = loadShader(GL_VERTEX_SHADER, vertexSource);
     unsigned fragmentShader = loadShader(GL_FRAGMENT_SHADER, fragmentSource);