Revert of More regular Platform implementations in unit tests (reland.)

third_party/WebKit/Source/platform/TestingPlatformSupport.cpp

Index: third_party/WebKit/Source/platform/TestingPlatformSupport.cpp
diff --git a/third_party/WebKit/Source/platform/TestingPlatformSupport.cpp b/third_party/WebKit/Source/platform/TestingPlatformSupport.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..fcb4dbb73b56feb99c3894e35c66a3870fbe5dd0
--- /dev/null
+++ b/third_party/WebKit/Source/platform/TestingPlatformSupport.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "platform/TestingPlatformSupport.h"
+
+namespace blink {
+
+TestingDiscardableMemory::TestingDiscardableMemory(size_t size) : m_data(size), m_isLocked(true)
+{
+}
+
+TestingDiscardableMemory::~TestingDiscardableMemory()
+{
+}
+
+bool TestingDiscardableMemory::lock()
+{
+    ASSERT(!m_isLocked);
+    m_isLocked = true;
+    return false;
+}
+
+void* TestingDiscardableMemory::data()
+{
+    ASSERT(m_isLocked);
+    return m_data.data();
+}
+
+void TestingDiscardableMemory::unlock()
+{
+    ASSERT(m_isLocked);
+    m_isLocked = false;
+    // Force eviction to catch clients not correctly checking the return value of lock().
+    memset(m_data.data(), 0, m_data.size());
+}
+
+WebMemoryAllocatorDump* TestingDiscardableMemory::createMemoryAllocatorDump(const WebString& name, WebProcessMemoryDump* dump) const
+{
+    ASSERT_NOT_REACHED();
+    return nullptr;
+}
+
+TestingPlatformSupport::TestingPlatformSupport(const Config& config)
+    : m_config(config)
+    , m_oldPlatform(Platform::current())
+{
+    Platform::initialize(this);
+}
+
+TestingPlatformSupport::~TestingPlatformSupport()
+{
+    Platform::initialize(m_oldPlatform);
+}
+
+WebDiscardableMemory* TestingPlatformSupport::allocateAndLockDiscardableMemory(size_t bytes)
+{
+    return !m_config.hasDiscardableMemorySupport ? 0 : new TestingDiscardableMemory(bytes);
+}
+
+void TestingPlatformSupport::cryptographicallyRandomValues(unsigned char* buffer, size_t length)
+{
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+const unsigned char* TestingPlatformSupport::getTraceCategoryEnabledFlag(const char* categoryName)
+{
+    static const unsigned char tracingIsDisabled = 0;
+    return &tracingIsDisabled;
+}
+
+WebString TestingPlatformSupport::defaultLocale()
+{
+    return WebString::fromUTF8("en-US");
+}
+
+WebCompositorSupport* TestingPlatformSupport::compositorSupport()
+{
+    return m_config.compositorSupport;
+}
+
+} // namespace blink