Merge "Increase max shader cache size"

// Cache size limits.

static const size_t maxKeySize = 1024;

static const size_t maxValueSize = 2 * 1024 * 1024;

static const size_t maxTotalSize = 1024 * 1024;

static const size_t maxTotalSize = 4 * 1024 * 1024;

static_assert(maxKeySize + maxValueSize < maxTotalSize);

ShaderCache::ShaderCache() {

    // There is an "incomplete FileBlobCache type" compilation error, if ctor is moved to header.